TY  - RPRT
TI  - The National Center of the U.S. Geological Survey
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1974
DO  - 10.3133/70039550
UR  - https://pubs.usgs.gov/publication/70039550
ID  - 70039550
ER  -